1 files changed, 14 insertions, 0 deletions
diff --git a/test/-ext-/symbol/test_type.rb b/test/-ext-/symbol/test_type.rb
index f1749f55da..3c21e61a18 100644
--- a/test/-ext-/symbol/test_type.rb
+++ b/test/-ext-/symbol/test_type.rb
@@ -120,5 +120,19 @@ module Test_Symbol
       assert_symtype(Bug::Symbol.attrset("foo!="), :attrset?)
       assert_equal(:"foo!=", Bug::Symbol.attrset(:foo!))
     end
+
+    def test_check_id_invalid_type
+      cx = EnvUtil.labeled_class("X\u{1f431}")
+      assert_raise_with_message(TypeError, /X\u{1F431}/) {
+        Bug::Symbol.pinneddown?(cx)
+      }
+    end
+
+    def test_check_symbol_invalid_type
+      cx = EnvUtil.labeled_class("X\u{1f431}")
+      assert_raise_with_message(TypeError, /X\u{1F431}/) {
+        Bug::Symbol.find(cx)
+      }
+    end
   end
 end